Thioredoxin reductase peptide corresponds to residues 53-67 in thioredoxin reductase (TrxR), used in thioredoxin reductase research. Thioredoxin reductase acts as a reductant of disulfide-containing proteins and plays crucial role in cellular antioxidant defense[1][2].
[1]. Jan YH, et al. Cross-linking of thioredoxin reductase by the sulfur mustard analogue mechlorethamine(methylbis(2-chloroethyl)amine) in human lung epithelial cells and rat lung: selective inhibition of disulfide reduction but not redox cycling. Chem Res Toxicol. 2014 Jan 21;27(1):61-75. [2]. Valette O, et al. Biochemical Function, Molecular Structure and Evolution of an Atypical Thioredoxin Reductase from Desulfovibrio vulgaris. Front Microbiol. 2017 Sep 29;8:1855.